docs: def vscl(s, v1):
      """
      Multiply a scalar and a 3-dimensional double precision vector.
  
      http://naif.jpl.nasa.gov/pub/naif/toolkit_docs/C/cspice/vscl_c.html
  
      :param s: Scalar to multiply a vector 
      :type s: float
      :param v1: Vector to be multiplied 
      :type v1: 3-Element Array of floats
      :return: Product vector, s*v1.
      :rtype: 3-Element Array of floats
      """
      s = ctypes.c_double(s)
      v1 = stypes.toDoubleVector(v1)
      vout = stypes.emptyDoubleVector(3)
      libspice.vscl_c(s, v1, vout)
      return stypes.cVectorToPython(vout)